Safety fountain pen



Nov. 7, 1944.

D. E. STEVEN SAFETY FOUNTAIN PEN Filed Jan. 20

gin u: n tow DE/S'Zeven Patented Nov. 7, 1944 UNITED STATES PATENT OFFICE SAFETY FOUNTAIN PEN Diedrich E. Steven, Chicago, 111. Application January 20, 1944, Serial No. 519,018

3 Claims.

This invention relates to a fountain pen and aims to provide a novel construction capable of being closed or sealed when not in use to avoid leakage or spilling.

It is further aimed to provide a novel structure wherein the feeder bar and pen point will be automatically projected as a cap is removed to expose the same, and also to provide on such cap a depressing element engageable with the feeder to retract the latter as the cap is applied.

The more specific objects and advantages will in part be pointed out and otherwise become apparent from a consideration of the description following taken in connection with accompanying drawing illustrating an operative embodiment.

In said drawing:

Figure 1 is a view in elevation of a fountain pen constructed in accordance with the invention;

Figure 2 is a central longitudinal sectional view through the pen in closed condition;

Figure 3 is a sectional view'similar to Figure 2, but with the pen point projected and with the cap in inoperative position;

Figure 4 is a cross section taken on the line 4-4 of Figure 3; and

Figure 5 is a fragmentary central longitudinal sectional view taken through a modified form.

Referring specifically to the drawing wherein like reference characters designate like or similar parts, a tubular barrel is shown at l having extension -I I thereon, at one end, such extension being detachable or rigid with the barrel I0 proper, as preferred. Extension II has a central longitudinal cylindrical bore at I2 in which a feeder bar I3, for ink from the interior of the barrel I0 to a pen point I4 carried by the feeder bar, passes. The feeder bar I3 may be of any usual or suitable construction and it carries a bushing or sleeve I which directly slidably engages bore-wall I2,

It will be noted that the feeder bar I3 is spaced from the bore of the bushing l5 as at IS,

in order to detachably receive and retain the pen ton-like head 23 engaging the wall of the tube to prevent passage of ink past the same. An expansive coil spring 24 is housed within the tube I8 between the closed end of the latter and the head 23, and is adapted to .urge the head 23, rod 22, feeder bar I3 and pen point I 4 to the projected or writing position shown in Figure 3.

An end section 25 is adapted to be screw threaded at 26 to the plug II! in order to cover the adjacent end of the tube I9.

A suitable cap is provided at 21 which may be made in sections in order to secure an attaching clip 28 therebetween, as shown. This cap or closure 21 intimately engages the extension II along tapered walls as at 29 and thecap has interior screw threads at 30 detachably engaging exterior screw threads 3| on the extension. In addition, a central longitudinal rod 32 projects inwardly from the base of the cap 21, abuts the outer end of the feeder bar l3 and as the cap is screwed in place, the rod 32 displaces the feeder bar I3 at point I4, moving the same inward to the position shown in Figure 2, in which the spring 24 is compressed. In such position, the cap engages the extension II in a tight manner guarding against danger of spilling or leakage of ink therefrom.

When the cap 21. is removed, the rod 32 will disengage the feeder bar I3 and hence the expansiveac'tion of the spring 24 will extend the feeder bar and pen point as shown in Figure 3, to operative or writing position, after which, the cap 21 may be frictionally and detachably mounted on the free end of the end section 25.

The gasket 20, as stated, may be of cork, but no limitation is to be implied, since it may be .made of rubber or any other suitable material;

As shown in Figure 5, a rubber gasket 20a is provided which functions exactly like that at 20, being carried by a tube I9a like that at I9, as by means of outwardly extending flanges at 2Ia. The rod 22a, head 23a and spring 24a are like rod 22, head 23 and spring 24 of the preceding form.

It will be understood that the parts may be made from any suitable material.

Also, in refilling the pen, this end is accomplished by holding the extension I I in ink and operating the tube I9 in the manner of a pump.

I claim as my invention:

1. A pen of the class described having a barrel,

' means slidable therein to fill the barrel with ink tube engageable against the feeder means to urge projection of the latter to writing position, and cap means applicable to the barrel having a part engageable with the feeder means to move the latter to retracted position as the cap is applied.

2. A pen of the class described having a barrel. means slidable therein to an the barrel with ink and including a tube; feeder means to carry a pen point slidably mounted in the barrel and extending into the tube, spring means within the tube engageable against the feeder means to urge projection of the latter to writing position, cap means applicable to the barrel having apart engageable with the feeder means to move the latter to retracted position as the cap is applied, a gasket attached to the tube and peripherally engaging the inner wall of the barrel.

3. A pen of the class described having a barrel,

means slidable therein to ill! the barrel with ink.

and including a tube, feeder means to carry a pen point alidably mounted in the barrel and extending into the tube, spring means within the tube engageable against the feeder means to urge projection of the latter to writing position, cap means applicable to the barrel having a part engageable with the feeder means to move the latter to retracted position as the cap is applied, a gasket attached to the tube and peripherally engaging the inner wall of the barrel, a plug attached to the barrel and through which the tube slidably extends, and a rod extending from the feeder means into the barrel, terminating in' a head in the latter in engagement with the spring.

DIEDRICH E. STEVEN. 

